The ebuild seems to be missing SRC_URI arrows to rename the distfile: 22d785dd24329170f66e7696da38b3e90e033d61.tar.gz
commit 974e3cf11b4241f92929b4f68e5c75f3fb05d74a Author: David Seifert <soap@gentoo.org> Date: Fri Jun 2 19:30:53 2017 +0200 dev-vcs/guilt: [QA] Use proper distfile name Bug: https://bugs.gentoo.org/show_bug.cgi?id=619890